It's not a good habit to ______ what you can do today till tomorrow．（ ）
| A． |
take off |
B． |
put off |
C． |
get off |
D． |
turn off |
The boy is crazy about music and we always hear him in the music room.（ ）
A．to singB．singsC．singingD．sing
You've the computer for ten years and it doesn't work well.Why don't you buy a new one？（ ）
A．boughtB．hadC．haveD．borrowed
I plan to travel to America next month，and I think 2000 dollars enough.（ ）
A．wasB．areC．isD．were
As a middle school student，you should learn to depend yourself to make a decision.（ ）
A．ofB．withC．forD．on
In our school every student has to choose a club to join，so about one students have joined the Sports Club.（ ）
A．hundred ofB．hundreds of
C．hundredD．hundreds